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09-03-2008
| #1 (permalink) |
| | VMs and dedicated resources.... Correct me if I'm wrong -- VS2K5 only takes from the resource pool when a VM is powered up and operational. If a VM has 1 CPU and 1G memory allocations, but it's powered OFF, no resources are affected. (Well, except hard drive space of course; VHDs don't go away.) Correct? Reason for asking -- I'm about to create several VMs of different types and want to ensure I'm not parsing out all the memory and CPU cycles of the box. :-) It seems to be fairly common sensical that the resources would only be tapped when the VM is up, but Microsoft does have a habit of doing things a bit oddly sometimes.... James |
My System Specs |
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09-03-2008
| #2 (permalink) |
| | Re: VMs and dedicated resources.... >Correct me if I'm wrong -- VS2K5 only takes from the resource pool when Quote: >a VM is powered up and operational. If a VM has 1 CPU and 1G memory >allocations, but it's powered OFF, no resources are affected. (Well, >except hard drive space of course; VHDs don't go away.) > >Correct? service, but it's pretty negligible. Quote: >Reason for asking -- I'm about to create several VMs of different types >and want to ensure I'm not parsing out all the memory and CPU cycles of >the box. :-) It seems to be fairly common sensical that the resources >would only be tapped when the VM is up, but Microsoft does have a habit >of doing things a bit oddly sometimes.... I have far to may VM's! -- Bob Comer <Microsoft MVP Windows - Virtual Machine> On Wed, 03 Sep 2008 09:45:17 -0400, Noctaire <noctaire@xxxxxx> wrote: Quote: >Correct me if I'm wrong -- VS2K5 only takes from the resource pool when >a VM is powered up and operational. If a VM has 1 CPU and 1G memory >allocations, but it's powered OFF, no resources are affected. (Well, >except hard drive space of course; VHDs don't go away.) > >Correct? > >Reason for asking -- I'm about to create several VMs of different types >and want to ensure I'm not parsing out all the memory and CPU cycles of >the box. :-) It seems to be fairly common sensical that the resources >would only be tapped when the VM is up, but Microsoft does have a habit >of doing things a bit oddly sometimes.... > >James |
| My System Specs |
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09-04-2008
| #3 (permalink) |
| | Re: VMs and dedicated resources.... Yeah, I'd be in BIG trouble if it didn't release resources back! All that being said - a _paused_ VM still uses RAM, if not CPU. You have to actually shut down the VM if you want to release RAM back to the host. -- Charlie. http://msmvps.com/blogs/xperts64 http://mvp.support.microsoft.com/profile/charlie.russel "Robert Comer" <bobcomer-removeme-@xxxxxx> wrote in message news  n6tb41khi03cje3e5l10419tdks9gntst@xxxxxxQuote: Quote: > >Correct me if I'm wrong -- VS2K5 only takes from the resource pool when >>a VM is powered up and operational. If a VM has 1 CPU and 1G memory >>allocations, but it's powered OFF, no resources are affected. (Well, >>except hard drive space of course; VHDs don't go away.) >> >>Correct? > Yes. There is a tad of overhead for running the virtual Server > service, but it's pretty negligible. > Quote: >>Reason for asking -- I'm about to create several VMs of different types >>and want to ensure I'm not parsing out all the memory and CPU cycles of >>the box. :-) It seems to be fairly common sensical that the resources >>would only be tapped when the VM is up, but Microsoft does have a habit >>of doing things a bit oddly sometimes.... > No problem, if it did that, I'd never be able to boot any of my PC's, > I have far to may VM's! > > -- > Bob Comer <Microsoft MVP Windows - Virtual Machine> > > > > On Wed, 03 Sep 2008 09:45:17 -0400, Noctaire <noctaire@xxxxxx> > wrote: > Quote: >>Correct me if I'm wrong -- VS2K5 only takes from the resource pool when >>a VM is powered up and operational. If a VM has 1 CPU and 1G memory >>allocations, but it's powered OFF, no resources are affected. (Well, >>except hard drive space of course; VHDs don't go away.) >> >>Correct? >> >>Reason for asking -- I'm about to create several VMs of different types >>and want to ensure I'm not parsing out all the memory and CPU cycles of >>the box. :-) It seems to be fairly common sensical that the resources >>would only be tapped when the VM is up, but Microsoft does have a habit >>of doing things a bit oddly sometimes.... >> >>James |
| My System Specs |
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09-04-2008
| #4 (permalink) |
| | Re: VMs and dedicated resources.... >All that being said - a _paused_ VM still uses RAM, if not CPU. Good point. Quote: >You have to >actually shut down the VM if you want to release RAM back to the host. -- Bob Comer On Thu, 4 Sep 2008 06:29:22 -0700, "Charlie Russel - MVP" <charlie@xxxxxx> wrote: Quote: >Yeah, I'd be in BIG trouble if it didn't release resources back! > >All that being said - a _paused_ VM still uses RAM, if not CPU. You have to >actually shut down the VM if you want to release RAM back to the host. |
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09-04-2008
| #5 (permalink) |
| | Re: VMs and dedicated resources.... Yes, saved state does release it. -- Charlie. http://msmvps.com/blogs/xperts64 http://mvp.support.microsoft.com/profile/charlie.russel "Robert Comer" <bobcomer-removeme-@xxxxxx> wrote in message news:91rvb414n4oso3ja249iaghev8opoluhvj@xxxxxx Quote: Quote: > >All that being said - a _paused_ VM still uses RAM, if not CPU. > Good point. > Quote: >>You have to >>actually shut down the VM if you want to release RAM back to the host. > Or save state -- it releases the RAM too... > > -- > Bob Comer > > > On Thu, 4 Sep 2008 06:29:22 -0700, "Charlie Russel - MVP" > <charlie@xxxxxx> wrote: > Quote: >>Yeah, I'd be in BIG trouble if it didn't release resources back! >> >>All that being said - a _paused_ VM still uses RAM, if not CPU. You have >>to >>actually shut down the VM if you want to release RAM back to the host. |
| My System Specs |
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